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This HDMI 2.1 4×1 switch adopts standard 48Gbps high-speed transmission chip to fully unlock HDMI2.1 specification performance, supporting max 8K@60Hz ultra HD, 4K@120Hz high refresh gaming, HDR10 dynamic image and HDCP2.3 copyright decoding, alongside VRR variable refresh rate to eliminate screen tearing for competitive gameplay. It enables four different HDMI input devices to share one single display seamlessly, equipped with dedicated IR remote controller for effortless channel switching without frequent cable plugging. Solid all-metal black housing effectively blocks external electromagnetic interference and accelerates heat exhaust to maintain consistent signal stability. No extra software or external power required for quick setup, ideal for premium home theater, e-sports gaming room and multi-source office presentation, perfectly matching PS5, Xbox Series X/S, Nintendo Switch, Fire TV Stick, Roku, Apple TV, desktop gaming PC and Blu-ray player.